/*回到顶部功能
-------------------------------------------------------*/
.back-to-top{
    display: none;
    position: fixed;
    right: 40px;
    bottom: 50px;
    z-index: 999;
    width: 70px;
    height: 240px;
    /* background: yellow; */
}
.back-to-top ul{
    width: 70px;
    height: 240px;
    /* background: red; */
}
.back-to-top ul li{
    width: 70px;
    height: 70px;
    /* background: skyblue; */
    text-align: center;
    line-height: 70px;
    border-radius: 50%;
    border: 1px solid #999;
    box-sizing: border-box;
}

.back-to-top ul li+li{
    margin-top: 15px;
}
.back-to-top ul li a{
    display: block;
    text-decoration: none;
    color: #999;
}
.back-to-top ul li:hover{
    border-color: #e8340e;
}
.back-to-top ul li:hover a{
    color: #e8340e;
}
.back-to-top ul .iconfont{
    font-size: 40px;
}


/*回到顶部功能 => 二维码图片
-----------------------------------------------*/
.back-to-top .app-download-img{
    display: none;
    position: absolute;
    right: 86px;
    bottom: 44px;
    width: 148px;
    height: 148px;
    background: #fff;
    border: 1px solid #999;
    border-radius: 4px;
    text-align: center;
}
.back-to-top .app-download-img img{
    width: 130px;
    height: 130px;
    margin-top: 10px;
}
.back-to-top .app-img-guide{
    position: absolute;
    left: 148px;
    top: 61px;
    border-width: 10px;
    border-left-width: 10px;
    border-style: solid;
    border-color: transparent transparent transparent #999;
}
.back-to-top .app-img-guide-in{
    position: absolute;
    left: 148px;
    top: 62px;
    border-width: 9px;
    border-left-width: 9px;
    border-style: solid;
    border-color: transparent transparent transparent #fff;
}